Jansson 2.1 was released yesterday. This
release adds a few new features and fixes some minor bugs. The full
release notes are
available here.

New features

A new decoding
function, json_loadb(),
was added for decoding buffers with length. The most important thing
is that the input buffer need not be null terminated. In the future,
it may also help to implement the support for zero bytes inside
strings.

json_loadb() is
like json_loads(),
except that it takes an additional length argument:

value=json_loadb(buffer,length,0,&error);

This version also introduces two new decoding flags and one new
encoding flag:

JSON_REJECT_DUPLICATES: Issue a decoding error if any
JSON object in the input contins duplicate keys.

JSON_DISABLE_EOF_CHECK: Stop decoding after a valid
JSON input. This allows other data after the JSON data.

JSON_ENCODE_ANY: Allow encoding any JSON value.
Without this flag, only arrays and objects can be encoded as the
root value.